Rodenstock 240mm f/5.6 Sironar-N MC Lens in Sinar DB Mount Review

The Rodenstock 240mm f/5.6 Sironar-N MC is a large format lens designed for technical and view cameras with Sinar DB mounts. This particular unit is a used example in excellent-plus condition, arriving with the lens board, caps, and code plate. The Sironar-N line is known for its multi-coating and solid optical performance in the moderate telephoto range for 4x5 and larger formats.

At 240mm, this focal length is a standard long lens for 4x5 work, offering a perspective roughly equivalent to a short telephoto on 35mm cameras. The f/5.6 maximum aperture is typical for lenses in this class, providing manageable coverage and image circle for movements. The Sinar DB mount makes this lens ready for use with Sinar technical cameras, though adapters may be available for other systems. The asking price of $255 for a used unit in excellent-plus condition sits in line with the secondary market for quality large format glass, particularly from a respected optical house like Rodenstock.